Wax polishing composition



3,328,179 WAX IQLISHHNG CUMPOSITION Albert Gathman, Belrnar, and Edward P. Cashman,

Bayonne, N.J., assignors to Essa Research and Engineering Company, a corporation of Delaware No Drawing. Filed May 1, 1964, Ser. No. 364,307 7 Claims. (or. 106-10) The present invention relates to a solvent-type wax composition. In general, it concerns a solution or paste solvent-type wax composition which posseses a very slow solvent evaporation rate. In particular, it concerns a composition consisting of a mixture of at least two parafiin waxes and an isoparaflinic solvent.

Solvent-type wax compositions known in the prior art have a common disadvantage. These compositions, for example, the commercial wax pastes used for shoe polishes, furniture polishes, car polishes etc., lose the solvents contained therein through rapid evaporation if the covers of the containers in which they are held are left opened for any appreciable length of time. A hard unusable mass remains after the solvent has evaporated. The present invention overcomes this disadvantage and provides a solvent-type wax composition which has a very slow rate of evaporation making the composition exhibit, for instance, extremely good storage stability.

The solvent-type wax composition of this invention consists of a combination of at least two parafiin waxes and an isoparafiinic solvent.

Parafiinic waxes suitable for use in the present invention occur naturally in crude petroleum. The combination of paraffin waxes employed may be any combination of at least two paraflin waxes provided the combination has a melting point in the range of about 126 to 146 F., preferably about 140 to 144 F. Examples of suitable combinations of paraffin waxes useful in the present invention include but are not limited to (a) a combination consisting of 20 to 80 vol. percent of a fully refined parafiin wax having a typical melting point of 123 F. and a distillation range of 65 Fahrenheit degrees (e.g. a commercially available product sold under the trade name Essowax 2210) and 80 to 20 vol. percent of a fully refined paraffin Wax having a typical melting point of 151 F. and a distillation range of 70 Fahrenheit degrees (eg a commercially available product marketed under the trade name Essowax 5010); (b) a combination consisting of about 25 vol. percent of a paraffin wax having a melting point of 110 F. and about 75 vol. percent of a fully refined paraffin wax having a typical melting point of 151 F. and a distillation range of 70 Fahrenheit degrees (e.g. Essowax 5010). A preferred combination of parafiin waxes suitable for use in this invention consists of a mixture of about 40 vol. percent Essowax 2210 and 60 vol. percent Essowax 5010.

Isoparafiinic solvents suitable for use in the composition in the present invention are mixtures of synthetic hydrocarbons obtained, for example, from alkylation and fractionation processes. The isoparaflinic solvent will consist of at least 50 vol. percent isoparaflins; preferably, at least 75 vol. percent isoparafiins and, more preferably, at least 90 vol. percent isoparafiins. The remainder of the isoparafiinic solvent (i.e. in addition to the isoparafiins) will comprise, primarily, other saturated hydrocarbons, for example, normal parafiins and naphthenic compounds. The isoparafi'lnic solvent will contain less than about 2 vol. percent aromatics; preferably, less than 0.5 vol. percent aromatics. In addition, a suitable isoparaffinic solvent will have ASTM D86 distillation range of from 3,32%,i79 Patented June 27, 1967 about 320 to 410 F., preferably, 345 to 380 F. It is contemplated that any isoparaffinic solvent or mixture of isoparaflinic solvents which fulfills the above requirements may be employed. A preferred isoparafiinic solvent for use in the present invention is herein identified as Isoparafiinic Solvent A and has the following typical in spection:

ISOPARAFFINIC SOLVENT A The solvent type Wax composition of the present invention comprises about 5 to 30 wt. percent, preferably about 20 wt. percent of the combination of isoparafiinic waxes hereinbefore described and about to wt. percent, preferably about 80 wt. percent of the isoparafiinic solvent hereinbefore described. The composition will at low w-ax concentrations, e.g. about 5% wax, be a solution, while at higher wax concentrations, e.g. about 20 wt. percent wax, it will be a paste.

The preparation of the solvent-type wax compositions of the present invention will be apparent to those skilled in the art. The composition may be prepared, for example, by simple blending of the parafiinic waxes with the isoparaffinic solvent and simple heating of the system in order to achieve solution. In general, a temperature in the range of about to F. is suflicient. The temperature should not be allowed to get too high because the wax odor degrades.

The wax compositions of the present invention may be used in many applications. It is contemplated that their prime application will be as a base for polishing compositions, for example, shoe polishes, furniture polishes, car polishes, etc. The composition may be employed in any application wherein a solvent-type paraffinic wax com position with a melting point in the range of about 126 to 146 F. has been heretofore employed.

In order to demonstrate the utility and the efficacy of the solvent-type wax composition of the present invention, several comparative tests were performed. In these tests the compositions of the present invention were compared with other wax compositions prepared f om different waxes and/or different solvents. For example, microcrystalline waxes and other parafiinic waxes were tested, as were commercial solvents other than isoparafiinic solvents such as mineral spirits and turpentine. In the first series of tests, Composition A, a composition of the present invention, was prepared and ten grams of the resulting wax solution was placed in an aluminum dish at ambient temperature (e.g. 77 F.) and its rate of solvent evaporation was recorded and compared to the rate of solvent evaporation from 10 gram samples (in aluminum dishes at ambient temperatures) of Compositions B, C, D and E. The results of this series of tests are shown in Table I.

s,a2s,1 79

TABLE I Weight of Solvent Evaporated Coinpo- Wax After sition wt. percent) Solvent (80 wt. percent) 1 Day 7 Days 28 Days Z Isoparafilnic Solvent A 1. S 1. 9 6. 3 Z 9. 1 81. 3 99.4 Z 16. 2 82.5 98. 1 Z 18.8 91.3 100.0 Y IsoparatTinic Solvent A 6. 6 68. 1 96. 9

Wax Z was a combination of 60 vol. percent of a highly refined parafiin wax having a melting point of about 151 F. and a distillation range of 70 F.

and 40 vol. percent of a highly refined parailin wax having a melting point of about 123 F. and a distillation range of about 65 F. The combination had a melting point of about 140 F Wax Y was a highly refined paraffin wax having a melting point of about 143 F. and a aliphatic solvent containing about 15 vol. percent aromatics Varsol 2 is similar to Varsol 1 but containing about 30 vol. percent aromatics and having a distillation range of about 326 to 398 F.

Varsol 3 is similar to Varsol 1 having a distillation range of about 318 to 354 F.

The results in Table I show the importance in the present invention of the use of an isoparafiinic solvent and further show the importance of using a combination of but containing about 10 vol. percent aromatics and range of about 140 to 144 F.; and said solvent contains at least 75 vol. percent isoparafiins.

3. A solvent-type wax composition as defined by claim paraflinic waxes (Composition A) as compared to a single 1 wherein said combination has a melting point of about parafiinic wax (Composition E). 140 F.; and said solvent contains at least 90 vol. percent A second series of tests was performed to evaluate the isoparaffins. evaporation rate of various solvents from various waxes 4. A solvent-type wax composition comprising about and wax blends. In this series of tests, 2 grams of wax 20 wt. percent of a combination of two parafiinic waxes solution at room temperature were placed in an alumsaid combination having a melting point in the range of inum dish and the wt. percent solvent evaporation was about 126 to 146 F; and about 80 wt. percent of an isonoted after 1, 7 and 28 days. The results of this series of paraffinic solvent, said solvent containing at least 50 vol. tests are shown in Table 11. percent isoparafiins, less than 2 vol. percent aromatics,

TABLE II Weight Percent Varsoll s0 s0 s0 so so s0 80 Isoparailinio Solvent A 80 S0 80 8O S0 80 80 40 4O Turpentine:

Wax W.

Wax Z WaxV Wax U 20/80 Vol. percent Wax V/U 80/20 Vol. percent Wax V/U Weight Percent Evaporation 1st Day 91. 9 48. 6 8. 6 3.8 16.0 3. 8 51. 9 23. 2 14.0 8. 9 10.1 6. 3 37.0 G. 8 6. 3 6.3 99. 6 99. 9 61.4 11.9 86.6 14. 4 100 99. 0 53. 6 34. 8 59.1 24. 6 99.1 39. 5 93. 7 31. 3 28th Day 99. 7 100 73. 8 41. 3 98.5 53. 5 100 100 90. 7 72. 4 96. 6 50. 5 99. 9 98. 9 100 75.0

Wax U was highly refined parafiin wax having a melting point of about 151 F elting point of about 123 Wax V was a highly refined paralfin wax having a m and a distillation range of about 70 Fahrenheit dezrees. F. and a distillation range of about 65 Fahrenheit devrees:

Wax W was a combination of 25 vol. percent of a paraffin wax having a melting point of about 110 F. and 75 vol. percent of Wax U. Wax X was high quality microerystalline wax having a melting point of about 145 F.

Wax Z is same composition as in table I.

The results shown in Tables I and II demonstrate the unexpectedly superior solvent evaporation properties obtained by the use of a solvent-type wax composition consisting of a combination of at least two parafiinic waxes and an isoparaffinic solvent, according to the present invention.

What is claimed is:

1. A solvent-type wax composition comprising about 5 to 30 wt. percent of a combination of at least two paraffinic waxes, said combination having a melting point in the range of about 126 to 146 F.; and about 70 to 95 wt. percent of an isoparafiinic solvent, said solvent containing at least vol. percent isoparaflins, less than 2 vol. percent aromatics and having an ASTM D86 distillation range of about 320 to 410 Fahrenheit degrees.

2. A solvent-type wax composition as defined by claim 1 wherein said combination has a melting point in the and having an ASTM D86 distillation range of about 345 to 380 Fahrenheit degrees.

5. A solvent-type wax composition as defined by claim 4 wherein said combination of two parafiinic waxes consists of (a) about to 20 vol. percent of a parafiin wax having a melting point of about 151 F. and a distillation range of 70 Fahrenheit degrees and (b) about 20 to 80 vol. percent of a paraffin wax having a melting point of about 123 F. and a distillation range of about 65 Fahrenheit degrees.

6. A solvent-type wax composition as defined by claim 4 wherein said combination of two parafiinic waxes consists of (a) about 60 vol. percent of a parafiin wax having a melting point of about 151 F. and a distillation range of 70 Fahrenheit degrees and (b) about 40 vol. percent of a parafiin wax having a melting point of about 123 F. and a distillation range of about 65 Fahrenheit degrees.

7. A solvent-type wax composition as defined by claim 1 wherein said combination of two paraflinic waxes consists of (a) about 80 to 20 vol. percent of a paraffin wax having a melting point of about 151 F. and a distillation range of 70 Fahrenheit degrees and (b) about 20 to 80 vol. percent of a paraffin wax having a melting point of about 123 F. and a distillation range of about 65 Fahrenheit degrees.

6 References Cited UNITED STATES PATENTS 2,157,625 5/1939 Page 106 2 70 5 2,439,021 4/1948 Quigg 260683.4 2,561,816 7/1951 Pabst et al 106271 ALEXANDER H. BRODMERKEL, Primary Examiner.

10 MORRIS LIEBMAN, T. MORRIS, Assistant Examiners. 

1. A SOLVENT-TYPE WAX COMPOSITION COMPRISING ABOUT 5 TO 30 WT. PERCENT OF A COMBINATION OF AT LEAST TWO PARAFFINIC WAXES, SAID COMBINATION HAVING A MELTING POINT IN THE RANGE OF ABOUT 126 TO 146*F.; AND ABOUT 70 TO 95 WT. PERCENT OF AN ISOPARAFFINIC SOLVENT, SAID SOLVENT CONTAINING AT LEAST 50 VOL. PERCENT ISOPARAFFINS, LESS THAN 2 VOL. PERCENT AROMATICS AND HAVING AN ASTM D-86 DISTILLATION RANGE OF ABOUT 320 TO 410 FAHRENHEIT DEGREES. 